i swear to beans - You promise to something messy like gum, soup, or whatever i

You promise to something messy like gum, soup, or whatever is in your hand instead of making a real swear.

I swear to this chicken soup if you don't stop talking about your loud uncle.

I swear to this gum if you don't make me listen to your bad singing.

I swear to this noodle mess if you don't keep bragging about your dog.